This commit was manufactured by cvs2svn to create branch 'SAMBA_3_0'.(This used to...
[jra/samba/.git] / source3 / auth / auth_domain.c
index 8c6bb8908fb52a7253ae1220267ee6c2c520653e..0d90a184a407a5d2095c4a0d034ad4f3ff7a119b 100644 (file)
 
 BOOL global_machine_password_needs_changing = False;
 
-extern pstring global_myname;
 extern userdom_struct current_user_info;
 
+
+/*
+  resolve the name of a DC in ways appropriate for an ADS domain mode
+  an ADS domain may not have Netbios enabled at all, so this is 
+  quite different from the RPC case
+  Note that we ignore the 'server' parameter here. That has the effect of using
+  the 'ADS server' smb.conf parameter, which is what we really want anyway
+ */
+static NTSTATUS ads_resolve_dc(fstring remote_machine, 
+                              struct in_addr *dest_ip)
+{
+       ADS_STRUCT *ads;
+       ads = ads_init_simple();
+       if (!ads) {
+               return NT_STATUS_NO_LOGON_SERVERS;              
+       }
+
+       DEBUG(4,("ads_resolve_dc: realm=%s\n", ads->config.realm));
+
+       ads->auth.flags |= ADS_AUTH_NO_BIND;
+
+#ifdef HAVE_ADS
+       /* a full ads_connect() is actually overkill, as we don't srictly need
+          to do the SASL auth in order to get the info we need, but libads
+          doesn't offer a better way right now */
+       ads_connect(ads);
+#endif
+
+       fstrcpy(remote_machine, ads->config.ldap_server_name);
+       strupper(remote_machine);
+       *dest_ip = ads->ldap_ip;
+       ads_destroy(&ads);
+       
+       if (!*remote_machine || is_zero_ip(*dest_ip)) {
+               return NT_STATUS_NO_LOGON_SERVERS;              
+       }
+
+       DEBUG(4,("ads_resolve_dc: using server='%s' IP=%s\n",
+                remote_machine, inet_ntoa(*dest_ip)));
+       
+       return NT_STATUS_OK;
+}
+
+/*
+  resolve the name of a DC in ways appropriate for RPC domain mode
+  this relies on the server supporting netbios and port 137 not being
+  firewalled
+ */
+static NTSTATUS rpc_resolve_dc(const char *server, 
+                              fstring remote_machine, 
+                              struct in_addr *dest_ip)
+{
+       if (is_ipaddress(server)) {
+               struct in_addr to_ip = *interpret_addr2(server);
+
+               /* we need to know the machines netbios name - this is a lousy
+                  way to find it, but until we have a RPC call that does this
+                  it will have to do */
+               if (!name_status_find("*", 0x20, 0x20, to_ip, remote_machine)) {
+                       DEBUG(2, ("rpc_resolve_dc: Can't resolve name for IP %s\n", server));
+                       return NT_STATUS_NO_LOGON_SERVERS;
+               }
+
+               *dest_ip = to_ip;
+               return NT_STATUS_OK;
+       } 
+
+       fstrcpy(remote_machine, server);
+       strupper(remote_machine);
+       if (!resolve_name(remote_machine, dest_ip, 0x20)) {
+               DEBUG(1,("rpc_resolve_dc: Can't resolve address for %s\n", 
+                        remote_machine));
+               return NT_STATUS_NO_LOGON_SERVERS;
+       }
+
+       DEBUG(4,("rpc_resolve_dc: using server='%s' IP=%s\n",
+                remote_machine, inet_ntoa(*dest_ip)));
+
+       return NT_STATUS_OK;
+}
+
 /**
  * Connect to a remote server for domain security authenticaion.
  *
  * @param cli the cli to return containing the active connection
  * @param server either a machine name or text IP address to
  *               connect to.
- * @param trust_password the trust password to establish the
+ * @param trust_passwd the trust password to establish the
  *                       credentials with.
  *
  **/
@@ -44,43 +124,31 @@ static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
                                                  const char *server, 
                                                  const char *setup_creds_as,
                                                  uint16 sec_chan,
-                                                 const unsigned char *trust_passwd)
+                                                 const unsigned char *trust_passwd,
+                                                 BOOL *retry)
 {
        struct in_addr dest_ip;
        fstring remote_machine;
         NTSTATUS result;
+       uint32 neg_flags = 0x000001ff;
 
-       if (is_ipaddress(server)) {
-               struct in_addr to_ip;
-         
-               /* we shouldn't have 255.255.255.255 forthe IP address of 
-                  a password server anyways */
-               if ((to_ip.s_addr=inet_addr(server)) == 0xFFFFFFFF) {
-                       DEBUG (0,("connect_to_domain_password_server: inet_addr(%s) returned 0xFFFFFFFF!\n", server));
-                       return NT_STATUS_UNSUCCESSFUL;
-               }
+       *retry = False;
 
-               if (!name_status_find("*", 0x20, 0x20, to_ip, remote_machine)) {
-                       DEBUG(0, ("connect_to_domain_password_server: Can't "
-                                 "resolve name for IP %s\n", server));
-                       return NT_STATUS_UNSUCCESSFUL;
-               }
-       } else {
-               fstrcpy(remote_machine, server);
-       }
-
-       standard_sub_basic(current_user_info.smb_name, remote_machine);
-       strupper(remote_machine);
+       if (lp_security() == SEC_ADS)
+               result = ads_resolve_dc(remote_machine, &dest_ip);
+       else
+               result = rpc_resolve_dc(server, remote_machine, &dest_ip);
 
-       if(!resolve_name( remote_machine, &dest_ip, 0x20)) {
-               DEBUG(1,("connect_to_domain_password_server: Can't resolve address for %s\n", remote_machine));
-               return NT_STATUS_UNSUCCESSFUL;
+       if (!NT_STATUS_IS_OK(result)) {
+               DEBUG(2,("connect_to_domain_password_server: unable to resolve DC: %s\n", 
+                        nt_errstr(result)));
+               return result;
        }
-  
+
        if (ismyip(dest_ip)) {
                DEBUG(1,("connect_to_domain_password_server: Password server loop - not using password server %s\n",
                         remote_machine));
-               return NT_STATUS_UNSUCCESSFUL;
+               return NT_STATUS_NO_LOGON_SERVERS;
        }
   
        /* TODO: Send a SAMLOGON request to determine whether this is a valid
@@ -97,12 +165,14 @@ static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
         * ACCESS_DENIED errors if 2 auths are done from the same machine. JRA.
         */
 
+       *retry = True;
+
        if (!grab_server_mutex(server))
-               return NT_STATUS_UNSUCCESSFUL;
+               return NT_STATUS_NO_LOGON_SERVERS;
        
        /* Attempt connection */
-       result = cli_full_connection(cli, global_myname, server,
-                                    &dest_ip, 0, "IPC$", "IPC", "", "", "");
+       result = cli_full_connection(cli, global_myname(), remote_machine,
+                                    &dest_ip, 0, "IPC$", "IPC", "", "", "",0, retry);
 
        if (!NT_STATUS_IS_OK(result)) {
                release_server_mutex();
@@ -122,14 +192,14 @@ static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
         * into account also. This patch from "Bjart Kvarme" <bjart.kvarme@usit.uio.no>.
         */
 
-       if(cli_nt_session_open(*cli, PIPE_NETLOGON) == False) {
+       if(cli_nt_session_open(*cli, PI_NETLOGON) == False) {
                DEBUG(0,("connect_to_domain_password_server: unable to open the domain client session to \
 machine %s. Error was : %s.\n", remote_machine, cli_errstr(*cli)));
                cli_nt_session_close(*cli);
                cli_ulogoff(*cli);
                cli_shutdown(*cli);
                release_server_mutex();
-               return NT_STATUS_UNSUCCESSFUL;
+               return NT_STATUS_NO_LOGON_SERVERS;
        }
 
        snprintf((*cli)->mach_acct, sizeof((*cli)->mach_acct) - 1, "%s$", setup_creds_as);
@@ -139,10 +209,10 @@ machine %s. Error was : %s.\n", remote_machine, cli_errstr(*cli)));
                return NT_STATUS_NO_MEMORY;
        }
 
-       result = new_cli_nt_setup_creds(*cli, sec_chan, trust_passwd);
+       result = cli_nt_setup_creds(*cli, sec_chan, trust_passwd, &neg_flags, 2);
 
         if (!NT_STATUS_IS_OK(result)) {
-               DEBUG(0,("connect_to_domain_password_server: unable to setup the PDC credentials to machine \
+               DEBUG(0,("connect_to_domain_password_server: unable to setup the NETLOGON credentials to machine \
 %s. Error was : %s.\n", remote_machine, nt_errstr(result)));
                cli_nt_session_close(*cli);
                cli_ulogoff(*cli);
@@ -167,106 +237,48 @@ static NTSTATUS attempt_connect_to_dc(struct cli_state **cli,
                                      uint16 sec_chan,
                                      const unsigned char *trust_passwd)
 {
+       NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+       BOOL retry = True;
        fstring dc_name;
+       int i;
 
        /*
         * Ignore addresses we have already tried.
         */
 
        if (is_zero_ip(*ip))
-               return NT_STATUS_UNSUCCESSFUL;
+               return NT_STATUS_NO_LOGON_SERVERS;
 
-       if (!lookup_dc_name(global_myname, domain, ip, dc_name))
-               return NT_STATUS_UNSUCCESSFUL;
+       if (!lookup_dc_name(global_myname(), domain, ip, dc_name))
+               return NT_STATUS_NO_LOGON_SERVERS;
 
-       return connect_to_domain_password_server(cli, dc_name, setup_creds_as, sec_chan, trust_passwd);
+       for (i = 0; (!NT_STATUS_IS_OK(ret)) && retry && (i < 3); i++)
+               ret = connect_to_domain_password_server(cli, dc_name, setup_creds_as,
+                               sec_chan, trust_passwd, &retry);
+       return ret;
 }
 
 /***********************************************************************
- We have been asked to dynamcially determine the IP addresses of
+ We have been asked to dynamically determine the IP addresses of
  the PDC and BDC's for DOMAIN, and query them in turn.
 ************************************************************************/
-static NTSTATUS find_connect_pdc(struct cli_state **cli, 
+static NTSTATUS find_connect_dc(struct cli_state **cli, 
                                 const char *domain,
                                 const char *setup_creds_as,
                                 uint16 sec_chan,
                                 unsigned char *trust_passwd, 
                                 time_t last_change_time)
 {
-       struct in_addr *ip_list = NULL;
-       int count = 0;
-       int i;
-       NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
-       time_t time_now = time(NULL);
-       BOOL use_pdc_only = False;
-
-       /*
-        * If the time the machine password has changed
-        * was less than an hour ago then we need to contact
-        * the PDC only, as we cannot be sure domain replication
-        * has yet taken place. Bug found by Gerald (way to go
-        * Gerald !). JRA.
-        */
-
-       if (time_now - last_change_time < 3600)
-               use_pdc_only = True;
+       struct in_addr dc_ip;
+       fstring srv_name;
 
-       if (!get_dc_list(use_pdc_only, domain, &ip_list, &count))
-               return NT_STATUS_UNSUCCESSFUL;
-
-       /*
-        * Firstly try and contact a PDC/BDC who has the same
-        * network address as any of our interfaces.
-        */
-       for(i = 0; i < count; i++) {
-               if(!is_local_net(ip_list[i]))
-                       continue;
-
-               if(NT_STATUS_IS_OK(nt_status = 
-                                  attempt_connect_to_dc(cli, domain, 
-                                                        &ip_list[i], setup_creds_as, 
-                                                        sec_chan, trust_passwd))) 
-                       break;
-               
-               zero_ip(&ip_list[i]); /* Tried and failed. */
+       if ( !rpc_find_dc(lp_workgroup(), srv_name, &dc_ip) ) {
+               DEBUG(0,("find_connect_dc: Failed to find an DCs for %s\n", lp_workgroup()));
+               return NT_STATUS_NO_LOGON_SERVERS;
        }
-
-       /*
-        * Secondly try and contact a random PDC/BDC.
-        */
-       if(!NT_STATUS_IS_OK(nt_status)) {
-               i = (sys_random() % count);
-
-               if (!is_zero_ip(ip_list[i])) {
-                       if (!NT_STATUS_IS_OK(nt_status = 
-                                            attempt_connect_to_dc(cli, domain, 
-                                                                  &ip_list[i], setup_creds_as, 
-                                                                  sec_chan, trust_passwd)))
-                               zero_ip(&ip_list[i]); /* Tried and failed. */
-               }
-       }
-
-       /*
-        * Finally go through the IP list in turn, ignoring any addresses
-        * we have already tried.
-        */
-       if(!NT_STATUS_IS_OK(nt_status)) {
-               /*
-                * Try and connect to any of the other IP addresses in the PDC/BDC list.
-                * Note that from a WINS server the #1 IP address is the PDC.
-                */
-               for(i = 0; i < count; i++) {
-                       if (is_zero_ip(ip_list[i]))
-                               continue;
-
-                       if (NT_STATUS_IS_OK(nt_status = attempt_connect_to_dc(cli, domain, 
-                                                 &ip_list[i], setup_creds_as, sec_chan, trust_passwd)))
-                               break;
-               }
-       }
-
-       SAFE_FREE(ip_list);
-       return nt_status;
+       
+       return attempt_connect_to_dc( cli, domain, &dc_ip, setup_creds_as, 
+                       sec_chan, trust_passwd );
 }
 
 /***********************************************************************
@@ -280,7 +292,7 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
                                       const char *domain,
                                       uchar chal[8],
                                       auth_serversupplied_info **server_info, 
-                                      char *server, char *setup_creds_as,
+                                      const char *server, const char *setup_creds_as,
                                       uint16 sec_chan,
                                       unsigned char trust_passwd[16],
                                       time_t last_change_time)
@@ -288,7 +300,7 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
        fstring remote_machine;
        NET_USER_INFO_3 info3;
        struct cli_state *cli = NULL;
-       NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+       NTSTATUS nt_status = NT_STATUS_NO_LOGON_SERVERS;
 
        /*
         * At this point, smb_apasswd points to the lanman response to
@@ -300,10 +312,14 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
 
        while (!NT_STATUS_IS_OK(nt_status) &&
               next_token(&server,remote_machine,LIST_SEP,sizeof(remote_machine))) {
-               if(strequal(remote_machine, "*")) {
-                       nt_status = find_connect_pdc(&cli, domain, setup_creds_as, sec_chan, trust_passwd, last_change_time);
+               if(lp_security() != SEC_ADS && strequal(remote_machine, "*")) {
+                       nt_status = find_connect_dc(&cli, domain, setup_creds_as, sec_chan, trust_passwd, last_change_time);
                } else {
-                       nt_status = connect_to_domain_password_server(&cli, remote_machine, setup_creds_as, sec_chan, trust_passwd);
+                       int i;
+                       BOOL retry = True;
+                       for (i = 0; !NT_STATUS_IS_OK(nt_status) && retry && (i < 3); i++)
+                               nt_status = connect_to_domain_password_server(&cli, remote_machine, setup_creds_as,
+                                               sec_chan, trust_passwd, &retry);
                }
        }
 
@@ -332,7 +348,8 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
                          user_info->domain.str, cli->srv_name_slash, 
                          nt_errstr(nt_status)));
        } else {
-               nt_status = make_server_info_info3(mem_ctx, domain, server_info, &info3);
+               nt_status = make_server_info_info3(mem_ctx, user_info->internal_username.str, 
+                                                  user_info->smb_name.str, domain, server_info, &info3);
 #if 0 
                /* The stuff doesn't work right yet */
                SMB_ASSERT(sizeof((*server_info)->session_key) == sizeof(info3.user_sess_key)); 
@@ -384,7 +401,7 @@ static NTSTATUS check_ntdomain_security(const struct auth_context *auth_context,
        char *password_server;
        unsigned char trust_passwd[16];
        time_t last_change_time;
-       char *domain = lp_workgroup();
+       const char *domain = lp_workgroup();
 
        if (!user_info || !server_info || !auth_context) {
                DEBUG(1,("check_ntdomain_security: Critical variables not present.  Failing.\n"));
@@ -397,7 +414,7 @@ static NTSTATUS check_ntdomain_security(const struct auth_context *auth_context,
         * password file.
         */
 
-       if(is_netbios_alias_or_name(user_info->domain.str)) {
+       if(is_myname(user_info->domain.str)) {
                DEBUG(3,("check_ntdomain_security: Requested domain was for this machine.\n"));
                return NT_STATUS_LOGON_FAILURE;
        }
@@ -409,14 +426,17 @@ static NTSTATUS check_ntdomain_security(const struct auth_context *auth_context,
 
        if (!secrets_fetch_trust_account_password(domain, trust_passwd, &last_change_time))
        {
-               DEBUG(0, ("check_ntdomain_security: could not fetch trust account password for domain %s\n", lp_workgroup()));
+               DEBUG(0, ("check_ntdomain_security: could not fetch trust account password for domain '%s'\n", domain));
                return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
        }
 
-       /* Test if machine password is expired and need to be changed */
-       if (time(NULL) > last_change_time + lp_machine_password_timeout())
-       {
-               global_machine_password_needs_changing = True;
+       /* Test if machine password has expired and needs to be changed */
+       if (lp_machine_password_timeout()) {
+               if (last_change_time > 0 && 
+                   time(NULL) > (last_change_time + 
+                                 lp_machine_password_timeout())) {
+                       global_machine_password_needs_changing = True;
+               }
        }
 
        /*
@@ -429,7 +449,7 @@ static NTSTATUS check_ntdomain_security(const struct auth_context *auth_context,
        nt_status = domain_client_validate(mem_ctx, user_info, domain,
                                           (uchar *)auth_context->challenge.data, 
                                           server_info, 
-                                          password_server, global_myname, SEC_CHAN_WKSTA, trust_passwd, last_change_time);
+                                          password_server, global_myname(), SEC_CHAN_WKSTA, trust_passwd, last_change_time);
        return nt_status;
 }
 
@@ -473,7 +493,7 @@ static NTSTATUS check_trustdomain_security(const struct auth_context *auth_conte
         * password file.
         */
 
-       if(is_netbios_alias_or_name(user_info->domain.str)) {
+       if(is_myname(user_info->domain.str)) {
                DEBUG(3,("check_trustdomain_security: Requested domain was for this machine.\n"));
                return NT_STATUS_LOGON_FAILURE;
        }
@@ -502,7 +522,7 @@ static NTSTATUS check_trustdomain_security(const struct auth_context *auth_conte
 #ifdef DEBUG_PASSWORD
        DEBUG(100, ("Trust password for domain %s is %s\n", user_info->domain.str, trust_password));
 #endif
-       E_md4hash((uchar *)trust_password, trust_md4_password);
+       E_md4hash(trust_password, trust_md4_password);
        SAFE_FREE(trust_password);
 
 #if 0